| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Duchstein, Linus Daniel Leonhard
in Cooperation with on an Cooperation-Score of 37%
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Publications (7/7 displayed)
- 2015Microstructure and hardness development in a copper-nickel diffusion gradient model system
- 2014In situ ETEM synthesis of NiGa alloy nanoparticles from nitrate salt solutioncitations
- 2014In situ observation of Cu-Ni alloy nanoparticle formation by X-ray diffraction, X-ray absorption spectroscopy, and transmission electron microscopy: Influence of Cu/Ni ratiocitations
- 2012Catalytic Conversion of Syngas into Higher Alcohols over Carbide Catalystscitations
- 2011In situ environmental transmission electron microscope investigation of NiGa nanoparticle synthesis
- 2011Dynamic studies of catalysts for biofuel synthesis in an Environmental Transmission Electron Microscope
- 2011Quantitative investigation of precipitate growth during ageing of Al-(Mg,Si) alloys by energy-filtered electron diffraction
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article
Microstructure and hardness development in a copper-nickel diffusion gradient model system
Abstract
Cu has been electrolytically coated with Ni and subsequently deformed by rotary swaging up to a strain of ε=2 to create a chemical gradient at the interface of the two elements. The extend of this chemical intermixing has been investigated through Energy Dispersive X-ray (EDX) spectroscopy in the Scanning and Transmission Electron Microscope (SEM and TEM). The depth, in which intermixing takes place, is about 1μm from the interface. Because of the uniform deformation, the structure does not get elongated but rather uniformly reduced in size. Microindentation hardness measurement shows a hardness increase from 120 to 135kp/mm² in the Cu phase with increasing strain. After annealing at 200°C for up to 4h the hardness first decreases, but raises above the value for the highly strained sample. The experimental findings are discussed with emphasis on surface mechanical alloying as a process of both scientific and technological interest.